Smokeless nitrocellulose-nitroglycerin powder and method of making the same.



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FRIEDRICH ALEXANDER. szrrsc sssioivos DU soivi DJ.

DELANARE, A. GOREORATION 23F NEW J r Y SMOKELESS NIJJRGCELLULOSE-NITRQGL'Z'GERIN newness AND on MAKING some. i

It 0 Brewing. Application filed 'ni'ov" i To (ZZZ 107mm 2'25 may cot/1.06m:

Be it .zno'vvn that l, Finn lt-" scnxn, a subject of th ny, residing; at Gcest 1 Gl'l'llfiilf], have invented new Improvement in Smokeless iliti'ocellu Nitroglycerin Powder and Methods 01. in the Same, of which the following full, clear, and exact description.

hlitrocellulose-i.iti'oglycerin powder has, till now, generally heen made with the use of considerable quantities of volatile so.- vents, the elimination of which from the powder is ditlicult and. es a considerable time. Extensive experiments have oi late been made to produce such a powder without the use of volatile solvents of: the assistance of non-volatile substances hm gelatinizing influence which :i. in he powder.

In'the manufacture of such yowder paste Without volatile or non-volatile sol ents, it has now been shown that in consequence of the high temperatures which have to be ap-- plied in their manufacture, acid gaseous products may he formed, which greatly inipai: the ultimate stability of the finished product.

it have discovered by the addition a slight percentage of the double sa ts of aminonium, such sodium late, notwithstanding the prevailing during nianirfac culties are removed, and of high stability produced. The nitro glycerin content should be less than 30%.

As an example I may mention: 5% iii troglycei'in, 74% nitrocellulose, 1% sodium ammonium oxalate lire, after being" mechanically kneaded, rolled at s temperature oi 90-100 Centigrade, pressed into tubes at the same temperature, using acc iding to the dimensions of the tube, a pressure of between 4.00 to 1006 atmospheres.

I do not intend to limit myself specifically to sodium ammonium. oxalate, except where finished product the same may he specifically claimed. lflor do I intend to 1111111; myself to the meet one per cent. of sodium ammonium oxalate the intention is thstthe amount of the double salt of ammonium, forinstsnce, sodium ammonium oxalate, shall. he proportionately very sin-i l. V

Hay. 1;; now fully described niy-invcntlon,

oven'ient in the method of may. smokeless powders containihg .e and than thirty per cent. cerin which consists in adding to the ingre..1cnts a double salt or ammonium Without employing volatile solvents.

An improvement in the method of manufacturing smokeless powders containing nitrocellulose and less than thirty per cent. of nitroglycerin which consists in adding tothe ingredients a double salt of ammonium without employing volati e solvents, sha ing the mi: lure under hca oressure.

in improvement in the me ut'acturing smokeless p WClBlS containing nitz-o glycerin and nit-r0 cellulose, which con sists in adding; to the ingredients a double salt of ammonia Without employing volatile sci-vents, h ating the-mixture to a temperature of about 90 to 100 (1, and shaping under a pressure of from 400 to 1000 atmospheres.

loci of mensolvents and shaping the mixture under heat and pressure.

6. An improvement in the method of manufacturing smokeless powders {containing nitroglycerin and nitrocelluloseawhich con-.

sists in adding to the ingredients a double oxalate ot'emmonium in amount. not exceedfive per Without employing volatile ing' five per cent. Without employing volatile solvents. l

7. An imoro -Jenient in the method of inimufaeturing smokeless powder containing hereunto set my hand, at Hamburg, on this n t roglycerin and nitro cellulose, which conffith day or October, 1911.

-sisis 1n miding to the ingredients sodium w v n \71 ammonium oxalate in amount not exceeding FRIEDREOH ALEAANMR RITSJHK five per cent. without employing volatile Witnesses: solvents. ERNEST H. L. MUMBENHOFF,

In testimony of which invention, I have IDA CHRISTQ HAFERMANN. 

